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Finding the Fourth Proportional to 103,689.78, 155,559.38 and 33,569.10

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Solution

The fourth proportional to 103,689.78, 155,559.38 and 33,569.10 is: 50,361.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,689.78 : 155,559.38 = 33,569.10 : x
  2. Step 2: Convert to fraction form
    103,689.78/155,559.38 = 33,569.10/x
  3. Step 3: Cross multiply
    103,689.78x = 155,559.38 × 33,569.10
  4. Step 4: Simplify right side
    103,689.78x = 5,221,988,383.16
  5. Step 5: Solve for x
    x = 5,221,988,383.16/103,689.78
  6. Step 6: Final answer
    x = 50,361.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.